UK specialist golf apparel retailer Function18 faced international competition plus rising VAT, duty, shipping, returns and risk-management cost, making its existing cross-border operation difficult to scale. After adding Global-e, the store supported more than 100 currencies, 150-plus payment methods, duty and tax calculation with prepayment, localized welcome messages and checkout in over 30 languages, while outsourcing part of fulfilment, legal and risk work. The case study reports international sales grew more than 30% year on year within two months, non-EU locations rose over 50% and global cross-border sales exceeded 130% year-on-year growth two years later. In 2017, international sales rose more than 90% and returning international customers increased 80%. The earning mechanism combines specialist golf demand with localization. The numbers come from a vendor-customer case, and net profit still depends on product margin, logistics, returns, duties, service fees and the historical period.